Electrons in Atoms

True or False: Electrons can exist in between energy levels.

• TRUE

• FALSE

Once the electron in a hydrogen atom absorbs a quantum of energy, it

• is now in its ground state.  

• is now in its excited state.  

• has released a photon.

• none of the above

What is the total number of orbitals in the third principal energy level?

• 1

• 4

• 9

• 16

What is the maximum number of electrons allowed in the third energy level?

• 2

• 8

• 18

• 32

What is the maximum number of electrons that can occupy one orbital?

• 1

• 2

• 8

• 18

The electron configuration for fluorine is

• 1s²2s²2p³

• 1s²2s²2p⁵

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The first three electrons that enter into p orbitals must have

• parallel spins.

• opposite spins.

• low energy levels

• opposite charges.

The atom whose electron configuration is 1s²2s²2p⁶3s²3p¹ is

• Ba

• Na

• Al

• Ga

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The configuration for the outermost energy level in Ca is

• 3s²

• 4s²

• 2s¹

• 4s¹

Tags

NGSS.HS-PS1-1

The element having the same s and p configurations for principal energy level 3 as the element F has for its principal energy level 2 is

• Na

• Al

• P

• Cl

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2